ATMEGA64C1-15MZ - 8-bit AVR MCU 64KB Flash 16MHz QFN-32 | Microchip
MPN: ATMEGA64C1-15MZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.29 | $2.29 |
| 10 | $2.06 | $20.60 |
| 100 | $1.9087 | $190.87 |
| 500 | $1.79 | $895.00 |
| 1,000 | $1.62 | $1,620.00 |
ATMEGA64C1-15MZ Overview
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor in the broader taxonomy of microcontrollers, embedded processors, and system-on-chip devices. AVR MCUs execute most of their 131 powerful instructions in a single clock cycle, combining the program and data buses so flash, SRAM, and peripherals respond with minimal latency. They sit inside the power-management and embedded-control hierarchy of automotive and industrial electronic control units.
Key differentiating features include the 64 KB (32K x 16) self-programming ISP Flash, an internal oscillator that removes the need for an external crystal in many designs, and automotive-grade temperature support up to 125 C in the MZ grade. The ATmega C1 family is aimed at automotive body and motor-control applications and pairs the AVR core with flexible peripheral sets including timers, PWM channels, and serial interfaces.
Technical depth comes from the advanced AVR RISC architecture: 32 general purpose working registers are directly connected to the ALU, allowing one-cycle execution of most instructions and achieving up to 16 MIPS throughput at 16 MHz. Read-while-write flash operation permits firmware updates in the field through the self-programming boot loader without stalling execution.
Typical applications include automotive body electronics, linear and stepper motor control, HVAC actuators, LIN-based sensor and actuator nodes, and industrial control systems that need a small, robust 8-bit controller with generous flash.
A key design consideration is thermal budget: in the 7x7 mm exposed-pad QFN-32, soldering the center pad to a copper pour is important for heat extraction in 125 C ambient environments.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ATMEGA64C1-15MZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA64C1-15MZ (same form factor and footprint) β differing in Mounting Type, Package, ADC, EEPROM, EEPROM Size.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA64M1-15MZ
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$3.12 / Unit
View Datasheet βATMEGA32C1-15AZ
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$2.95 / Unit
View Datasheet βATMEGA16C1-15MZ
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
AT90PWM316-16MUR
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA64C1-15MZ Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit AVR RISC |
| Program Memory Size | 64 KB (32K x 16) Flash |
| Flash Features | ISP, read-while-write |
| EEPROM Size | 2 KB |
| SRAM Size | 4 KB |
| Maximum CPU Speed | 16 MHz |
| Instructions | 131 instructions, most single-cycle |
| Working Registers | 32 general purpose |
| General Purpose I/O | 27 I/O lines |
| Oscillator Type | Internal |
| Package | 32-VQFN Exposed Pad (7x7 mm) |
| Temperature Grade | MZ (up to 125 C) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Product Series | AVR ATmega Automotive C1 |
ATMEGA64C1-15MZ 32-vqfn exposed pad (7x7 mm) Pin Configuration Guide
Pin configuration for ATMEGA64C1-15MZ (32-vqfn exposed pad (7x7 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMEGA64C1-15MZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA64C1-15MZ is suitable for 6 applications: Automotive Body Electronics, DC and Stepper Motor Control, HVAC Actuator Control, LIN Sensor and Actuator Nodes, Industrial Control and Automation, Battery-Powered and IoT Sensor Nodes.
Automotive Body Electronics
The ATMEGA64C1-15MZ fits automotive body-control functions such as door modules, seat controllers, lighting modules, and wiper systems because it combines 64 KB of self-programming flash with an AVR core rated to 125 C in the MZ grade. The 27 GPIO lines drive relays, LEDs, and switches directly, while LIN-oriented C1 peripherals handle in-vehicle networking. In a typical node, the MCU runs from the internal oscillator at up to 16 MHz, reads switch states through its GPIO, and responds to LIN commands without an external crystal. The 125 C rating allows mounting in high-temperature zones near lamps or motors, reducing wiring harness complexity.
Recommended
DC and Stepper Motor Control
The AVR C1 family's flexible timers and PWM outputs make the ATMEGA64C1-15MZ well suited for driving brushed DC and stepper motors in mechatronic modules. With 16 MIPS throughput at 16 MHz, the core executes closed-loop current and position control loops with single-cycle instruction latency, while 64 KB flash stores commutation tables, ramp profiles, and fault diagnostics. The 32-QFN exposed-pad package conducts heat into the PCB copper for reliable operation at elevated ambient. Designers pair it with external gate drivers or integrated H-bridges, using PWM outputs for speed control and ADC inputs for back-EMF or current feedback sensing.
Recommended
HVAC Actuator Control
Automotive HVAC flap actuators and blower controllers benefit from the ATMEGA64C1-15MZ's combination of 125 C temperature rating, 27 GPIO lines, and 64 KB flash for position-feedback algorithms. The MCU reads feedback potentiometers or Hall sensors, drives the actuator motor through PWM, and reports position over LIN. Read-while-write flash permits calibration data storage in the self-programming boot region without external EEPROM in many designs, although the integrated 2 KB EEPROM is available for wear-leveled parameter storage. The internal oscillator removes crystal cost in position-control loops where CAN-grade timing accuracy is not required.
Recommended
LIN Sensor and Actuator Nodes
The ATMEGA64C1-15MZ is designed for LIN-connected sensor and actuator nodes in vehicles: window lifters, mirror adjusters, rain sensors, and fluid-level senders. The C1 peripheral set supports LIN communication, and the 64 KB flash leaves headroom for protocol stacks, diagnostic services (UDS-style), and application logic within a single chip. Its 4 KB SRAM buffers LIN frames and application state comfortably. The MZ grade supports engine-bay-adjacent mounting up to 125 C. Because the AVR core executes most instructions in a single cycle at 16 MHz, LIN message handling and local control loops coexist deterministically without a faster 32-bit processor.
Recommended
Industrial Control and Automation
In industrial equipment, the ATMEGA64C1-15MZ serves as a compact embedded controller for pumps, fans, valves, and small conveyors where 8-bit performance and 64 KB of code space are sufficient. The AVR's 131-instruction single-cycle RISC core delivers predictable real-time behavior for PID loops, while the 2 KB EEPROM retains configuration across power cycles. The exposed-pad QFN-32 handles control-cabinet ambient temperatures, and the internal oscillator reduces BOM cost in cost-sensitive OEM controllers. Firmware updates in the field are supported through ISP self-programming with read-while-write, enabling remote feature upgrades without replacing hardware.
Recommended
Battery-Powered and IoT Sensor Nodes
With an internal oscillator, low-power AVR sleep modes, and 4 KB SRAM, the ATMEGA64C1-15MZ can serve battery-operated sensing and telemetry nodes that occasionally transmit over LIN or serial links. The AVR power-management clock-gating allows the core to idle between measurements, and flash read-while-write supports local event logging without external memory in medium-size logs. The 27 GPIO lines interface multiple sensors, and 64 KB flash accommodates protocol stacks plus data compression. Designers should budget sleep-mode current against the datasheet power figures to size the battery for the target service life.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA64C1-15MZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA64M1-15MZ | ATMEGA32C1-15AZ | ATMEGA16C1-15MZ | AT90PWM316-16MUR |
|---|---|---|---|---|---|
| Package | 32-VQFN (7x7 mm) Exposed Pad | 32-VQFN (7x7 mm) - same footprint | 32-VQFN (7x7 mm) - same footprint | 32-VQFN (7x7 mm) - same footprint | 32-QFN (7x7 mm) - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 4 KB | 4 KB | 2 KB | 1 KB | 1 KB |
| CPU Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Family Peripherals | C1 (LIN / automotive body) | M1 (CAN + motor control) | C1 (LIN / automotive body) | C1 (LIN / automotive body) | PWM power-control peripherals |
Key Differentiators
- Largest flash in the pin-compatible C1/QFN-32 family (vs ATMEGA32C1-15AZ)
- LIN-oriented C1 peripheral set for automotive body nodes (vs ATMEGA64M1-15MZ)
- Trade-off: lower memory density than general-purpose ATmega64A (vs ATMEGA64A-MUR)
Design Notes
The 32-QFN 7x7 mm exposed-pad package relies on the center pad for heat dissipation and ground integrity. Solder the exposed pad to a copper pour with an array of thermal vias (typical 3x3 or 4x4 via grid) to the ground plane. Per Microchip QFN application guidance, insufficient exposed-pad soldering is a leading cause of thermal and EMC failures in automotive modules; use X-ray or cross-section inspection during process qualification.
Decouple VCC with 100 nF ceramic capacitors placed within 2 mm of the supply pins, plus a bulk 4.7-10 uF capacitor per rail. In automotive environments, add a reverse-polarity protected regulator front end (e.g., a LIN system-basis chip or a load-dump-rated LDO) since the ATmega64C1 itself is not load-dump tolerant. Estimated: a 10 mA average core draw from a 5 V rail is only 50 mW, so MCU self-heating is negligible; ambient and copper area dominate thermal design.
The internal oscillator is convenient but has limited absolute accuracy; if the design uses LIN or any time-critical serial communication, check the datasheet oscillator tolerance versus protocol requirements and consider calibration in production test. Also, when substituting ATMEGA32C1 or ATMEGA16C1 for this 64 KB part, remember code density: a 64 KB application will not link into 32 KB or 16 KB - measure linked size with -Os optimization before committing to a smaller-memory drop-in.
Keep the reset line short and add a 10 kOhm pull-up plus optional 100 nF capacitor for ESD robustness in automotive harness-coupled designs. Route PWM outputs to motor drivers away from analog feedback traces, and use a solid ground plane under the MCU to minimize ground bounce from simultaneously switching GPIO banks. Apply Microchip's AVR hardware design guidelines for series termination on long clock or LIN lines.
Compliance Information
Compliance statuses were not stated in the provided verified web data; the MZ automotive temperature grade suggests automotive qualification, but confirm RoHS/REACH/AEC-Q100 status from the Microchip product page before procurement.
